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   <a href="drvsim_rn_release_notes.htm">Release Notes</a> &gt; Changed Behaviour&nbsp;&gt;</p>
      <h1 class="p_Heading1" style="page-break-after: avoid;"><span class="f_Heading1">Release 19.0</span></h1>

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<p class="p_Normal"><span class="f_Heading2">Action Feedback</span></p>
<p class="p_Normal">The tab<span style="font-style: italic;"> Action Feedback</span> in the VI-DriveSim User Interface replace the tab <span style="font-style: italic;">Motors</span> in the previous software version. </p>
<p class="p_Normal">The motor drive's firmware calculates and applies a torque in order to reproduce the desired friction, damping and inertia (which can be specified in the <span style="font-style: italic;">Simulation parameters</span> in the <span style="font-style: italic;">Action Feedback</span> tab). To calculate the needed torque the firmware uses the information about the hardware friction, damping and inertia which can be specified in the <span style="font-style: italic;">Cockpit parameters </span>group in the <span style="font-style: italic;">Action Feedback</span> tab.</p>
<p class="p_Normal">&nbsp;</p>
<p class="p_Normal">The steering system has been improved with an <span style="font-weight: bold;">automatic centering system </span>of the steering wheel and, depending on the type of cockpit of the driving simulator, a <span style="font-weight: bold;">mechanical stopping safety system</span> is applied to the steering wheel.</p>
<p class="p_Normal">&nbsp;</p>
<p class="p_Normal">Depending on the type of motor's encoder, the automatic centering system is based on:</p>
<p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 0px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span><span style="font-style: italic;">multiturn encoder</span>: the zero position is calculated and reached respect to the mechanical stops (also the number of turns are taken in account) and the final position is in the middle between the mechanical stops with the steering wheel horizontal;</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 0px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span><span style="font-style: italic;">singleturn encoder</span>: the zero position is calculated respect to the current turn, so the final position is horizontal but it cannot be in the middle between the mechanical stops. </p><p class="p_Normal">&nbsp;</p>
<h2 class="p_Heading2" style="page-break-after: avoid;"><span class="f_Heading2">VI-CarRealTime</span></h2>
<p class="p_Normal">When a VI-CarRealTime model is configured for running in multithread mode, now the threads related to tire computation are assigned to separate CPUs incrementally starting from the one on which VI-CarRealTime is executed (refer to SimulationWorkBench documentation on how to configure the CPU assigned to a process). In previous version tire threads were allocated in different ways based on the tire model. Please make sure to properly configure your SimulationWorkBench tests in order to keep the VI-CarRealTime CPU and the following 4 reserved. Shielding of the same CPUs is also recommended.</p>
<p class="p_Normal">&nbsp;</p>
<p class="p_Normal"><span class="f_Bold">ALL MODULES: for a list of added or changed parameters, please refer to </span> <span style="font-weight: bold;">Environment Configuration File</span></p>

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